Vibrator assembly for concrete mold plates

ABSTRACT

A vibrator assembly for a concrete mold plate comprising a vibrator to be located by means of form wedging or form fitting within the mold plate to one or more partition walls thereof, said vibrator being provided with an elongated fitting member making it possible to secure the vibrator relatively deeply inside the mould by fixing the fitting element to the mold plate itself.

United States Patent [1 1 Niemi et al.

[45] Nov. 13, 1973 VIBRATOR ASSEMBLY FOR CONCRETE MOLD PLATES [75]Inventors: Ossi Niemi, Tampere, Finland; Heino Juvonen, Kreis, Budingen,Germany [73] Assignee: Toyalan Terasvalmiste Kommandiitiyhtio VeljeksetVirtanen, Toijala, Finland [2L2] Filed July 1 19 7 1 211 App1.No.:158,952

[52] US. Cl 259/1 R, 259/DIG. 41, 425/432 [51] Int. Cl B28b 1/08, BOlf11/00 [58] Field of Search 259/1 R, DIG. 41,

259/DIG. 42, DIG. 43, DIG. 44; 425/424, 429, 432, 430, 456

[56] References Cited UNITED STATES PATENTS 3/1958 Andriani 259/DIG. 42

Glass 425/456 x 3,213,512 10/1965 2,656,161 10/1953 Degen 425/456 X2,667,679 2/1954 Jackman 425/430 X Primary Examiner-John PetrakesAssistant Examiner-Alan I. Cantor Attorney-Eric H. Waters et al.

57 ABSTRACT.

A vibrator assembly for a concrete mold plate comprising a vibrator tobe located by means of form wedging or form fitting within the moldplate to one or more partition walls thereof, said vibrator beingprovided with an elongated fitting member making it possible to securethe vibrator relatively deeply inside the mould by fixing the fittingelement to the mold plate itself.

15 Claims, 6 Drawing Figures 1 VIBRATOR ASSEMBLY FOR CONCRETE MOLDPLATES This invention relates to a vibrator assembly for concrete moldplates comprising fitting elements in the mold plate and a vibrator.

Such mold vibrators which are attached, for example, to the surface of amold plate are used for the packing of concrete material, particularlyin packet and other vertically cast molds. There are also rod vibratorswhich are located inside the concrete itself. In addition, attempts havebeen made to locate vibrators inside mold plates, but because ofassembly difficulties it has been necessary to place'thern near theedges of the mold plates, and the vibration effect has not been satis-'the fitting of the vibrator is both simple and reliable the locating ofthe vibrator is easy the vibrator can be fitted at a great distance fromthe edges of the plate, giving better results the dimensions of thevibrator can be sufiiciently reduced for it to be used with relativelythin mold plates.

The invention is described in greater detailbelow with the aid of theattached drawings in which: I

FIG. 1 is a longitudinal cross-sectional view of a mold plate showing avibrator assembly in accordance with the invention;

FIG. 2 shows the assembly of FIG. 1 through a crosssection along line2-2 of the moldplatein FIG. 1 and FIGS. 3 to 6 show the vibrator invarious different forms.

ln FIGS. 1 and 2, a housing of tubeform 2 is fitted, in apertureslocated in the partition walls 10., ll of a.

mold plate 1. The inner surface of this housing 2 is tapered in thedirection of the inner part of the mold plate 1 in such a fashion thatthe vibrator 3, whose outer surface follows the contours of the innersurface of the housing 2, is securelywedged in position.

The vibrator consists of a head 3, a shaft element 4 connected to thehead and a fixing flange 8 which is, in

2 have the form of a tapering solid of revolution, a frustum of a cone,a truncated pyramid, a cylinder, a prism, or any similartype of shape(FIGS. 3-6).

The housing 2 can also consist of an opening in one of the partitionwalls 10, into which the vibrator 3 can be wedged. In addition thehousing 2 can be made up of openings in two or more adjacent partitionwalls l0, 11. A suitable reinforcing collar can be mounted around theopenings.

The housings 2 are fitted to the mold plates 1 during the manufacture ofthe plates. A housing 2 of tube-like shape will, for example,reinforce'the mold plate as a turn, connected to the shaft. There is anopening 6 in the side wall of the mold plate 1 at the same level ashousing 2, around which the fixing flange 8 of the vibrator is attachedby means of bolts 7. The vibrator shown in- FIGS. land 2 is electricallyoperated, but the invention also permits the use of a vibratoroperatedby compressed air. It is desirable for the power transmissionelement 5 to pass through the shaft 4, but it can also be locatedoutside it.

The means of fixing the vibrator 3 depends upon its form in accordancewith the invention. Any of the following methods, form wedging (FIGS. 1and 2), form fitting, or thread fixing, which can be accomplished fromoutside the mold plate can be used. Different shapes can be used, andthus the inner surface of the housing 2 and/or the outer surface of thevibrator 3 can whole when welded to partition walls 10 and 11.

As will be appreciated from the above, FIGS. 1 and 2 represent only onecorner of a bigger mold plate having a generally box-like structure andbeing provided with at least one horizontal vibrator 3. When the mold isfilled, the concrete'to be vibrated will be situated between two ormore, e.g., parallel, moldplates', i.e., outside the lateral sheets 13and 14 (FIG. :2). The mold plate is reinforced with'intemal partitionwalls 10 and 11, which are parallel to each other and also parallel tothevertical edge plates 12. Finally, the mold plate is closed from itsupper and the lower side by means of horizontal edge plates 1. Thecutouts l5 and 16 in the partition walls 10 and '11 provide a passagefor the distribution ducts for/heating water. I

The vibrator 3 essentially becomes part of the mold plate when the moldplate is in function. In view of the easy detachment of the vibrators,however, the same vibrators may of course, be used with different moldplates.

It is also possible to reverse the situation so that, contrary to theembodiment of FIGS, 1 and 2, the outerend of the vibrator has, a biggercross-section than the inner end. As appears in FIG. 5, the vibrator hasa generally conical form, with longitudinal ridges 17 extending out ofthe conical surface. The'housing has a crosssection corresponding tothat of the vibrator in such a way that the minimum cross-section of thehousing at least equals the maximum cross-section of the vibrator. Thevibrator can be;inserted all through said housing,

' then turned about its axis, and finally pulled towards the aperture bymeans of a removable tube so that the ridges 17 will mate with thoseportions of the inner side of the housing having a smaller diameter.

What is claimed is:

l. A vibrator assembly for a concrete mold plate having at least onepartition wall, said assembly comprising fixing elements on the moldplate and a vibrator, said wherein the inner surface of the housing andthe outer surface of the vibrator have the form of a tapering solid ofrevolution. I

4. A vibrator assembly in accordanee with claim 3 wherein the innersurface of the housing and the outer surface of the vibrator have theform of the frustum of a cone.

5. A vibrator assembly in accordance with claim 2 wherein the innersurface of the housing and the outer surface of the vibrator have theform of a truncated pyramid.

6. A vibrator assembly in accordance with claim 2 wherein the innersurface of the housing and the outer surface of the vibrator have a format least approximating to a cylinder.

7. A vibrator assembly in accordance with claim 2 wherein the innersurface of the housing and the outer surface of the vibrator have a format least approximating to a prism.

8. A vibrator assembly in accordance with claim 2 comprisingcorresponding screw threads on the vibrator and the housing.

9. A vibrator assembly in accordance with claim 1 wherein the housingconsists of a cylindrically shaped element.

10. A vibrator assembly in accordance with claim 1 wherein the vibratorcomprises a head, a shaft element connected to the head and a fixingflange which is connected to the shaft.

11. A vibrator assembly in accordance with claim wherein the fixingflange is attached around an aperture provided in said plate.

12. A vibrator assembly in accordance with claim 11 comprising a powertransmission element for the vibrator passing through the shaft.

13. A vibrator arrangement for a concrete mold plate having innerpartition walls, comprising:

a. at least one vibrator;

b. fitting means for fixing the vibrator from outside the mold plate;

0. a shaft element interconnecting the vibrator said fixing means;

d. means in the mold plate defining an aperture for the insertion of thevibrator in the plate; and

e. means in the partition walls of the mold plate at least partiallymating with the outer surface of the vibrator for locating the vibratorinside the mold plate by form wedging or form fitting.

14. A vibrator arrangement as claimed in claim 13 wherein the means inthe partition walls comprises a separate housing.

15. A vibrator arrangmeent as claimed in claim 13 wherein the means forfixing the vibrator comprises a fixing flange.

with

UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Ossi Niemi et-al.Inventor(s) It is certified that error appears in the above-identifiedpatent and that said Letters Patentare hereby corrected as shown below:

The name-of the assignee should read Toijalan TerasvalmisteKommandiittiyhtio Veljekset Virtanen Signed and sealed this 17th day ofSeptember 1974.

(SEAL) Attest:

McCOY M. GIBSON JR. C MARSHALL DANN Attesting Officer Commissioner ofPatents FORM flo'ss) USCOMM-DC we're-P09 U.S. GOVERNMENT PRINTING OFFICE1 l99 0-365-33,

1. A vibrator assembly for a concrete mold plate having at least onepartition wall, said assembly comprising fixing elements on the moldplate and a vibrator, said fixing elements including at least onehousing in which the vibrator is accommodated by means of form wedgingor form fitting, said housing being attached to said partition wall ofthe mold plate.
 2. A vibrator assembly in accordance with claim 1wherein the inner surface of the housing and the outer surface of thevibrator are of the same general shape.
 3. A vibrator assembly inaccordance with claim 2 wherein the inner surface of the housing and theouter surface of the vibrator have the form of a tapering solid ofrevolution.
 4. A vibrator assembly in accordance with claim 3 whereinthe inner surface of the housing and the outer surface of the vibratorhave the form of the frustum of a cone.
 5. A vibrator assembly inaccordance with claim 2 wherein the inner surface of the housing and theouter surface of the vibrator have the form of a truncated pyramid.
 6. Avibrator assembly in accordance with claim 2 wherein the inner surfaceof the housing and the outer surface of the vibrator have a form atleast approximating to a cylinder.
 7. A vibrator assembly in accordancewith claim 2 wherein the inner surface of the housing and the outersurface of the vibrator have a form at least approximating to a prism.8. A vibrator assembly in accordance with claim 2 comprisingcorresponding screw threads on the vibrator and the housing.
 9. Avibrator assembly in accordance with claim 1 wherein the housingconsists of a cylindrically shaped element.
 10. A vibrator assembly inaccordance with claim 1 wherein the vibrator comprises a head, a shaftelement connected to the head and a fixing flange which is connected tothe shaft.
 11. A vibrator assembly in accordance with claim 10 whereinthe fixing flange is attached around an aperture provided in said plate.12. A vibrator assembly in accordance with claim 11 comprising a powertransmission element for the vibrator passing through the shaft.
 13. Avibrator arrangement for a concrete mold plate having inner partitionwalls, comprising: a. at least one vibrator; b. fitting means for fixingthe vibrator from outside the mold plate; c. a shaft elementinterconnecting the vibrator with said fixing means; d. means in themold plate defining an aperture for the insertion of the vibrator in theplate; and e. means in the partition walls of the mold plate at leastpartially mating with the outer surface of the vibrator for locating thevibrator inside the mold plate by form wedging or form fitting.
 14. Avibrator arrangement as claimed in claim 13 wherein the means in thepartition walls comprises a separate housing.
 15. A vibrator arrangmeentas claimed in claim 13 wherein the means for fixing the vibratorcomprises a fixing flange.